Sofa



FIG. 1 is a front left side perspective view for a sofa, showing my newdesign;

FIG. 2 is a front elevational view of FIG. 1 thereof;

FIG. 3 is a rear elevational view of FIG. 1 thereof;

FIG. 4 is a left side elevational view of FIG. 1 thereof, the right sideelevational view being a mirror image;

FIG. 5 is a top plan view of FIG. 1 thereof; and,

FIG. 6 is a bottom plan view of FIG. 1 thereof.

The broken lines indicate unclaimed portions of the sofa and form nopart of the claimed design.

CLAIM The ornamental design for a sofa, as shown and described.